CN115326365A - Optical module diopter measuring method, device and equipment of head-mounted equipment - Google Patents
Optical module diopter measuring method, device and equipment of head-mounted equipment Download PDFInfo
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Abstract
The invention discloses a diopter measuring method of an optical module of a head-mounted device, which is applied to the technical field of the head-mounted device and is applied to diopter measuring equipment provided with a graphic card module, a collimating device, an optical module to be measured and an image acquisition module along the light transmitting direction, and the diopter measuring method comprises the following steps: moving a graphic card in a graphic card module to an initial position in advance, wherein the initial position is obtained in advance; adjusting the position of the image card module, and acquiring each image card image of the image card through the image acquisition module; acquiring a picture card position corresponding to a picture card image with the highest definition; calculating the diopter of the optical module to be measured based on the initial position, the position of the graphic card and a preset calculation relation; the diopter measuring method is simple in diopter measuring process, high in measuring efficiency, simple in equipment cost and applicable to production measurement. The invention also discloses a device and equipment for measuring the diopter of the optical module of the head-mounted equipment, and the device and the equipment have the same beneficial effects.
Description
Technical Field
The invention relates to the technical field of head-mounted equipment, in particular to a method, a device and equipment for measuring diopter of an optical module of head-mounted equipment.
Background
The whole head-mounted device (such as an AR product) has various optical elements, such as an optical waveguide (or a free-form surface), a visual sensor Visor, a Display, positive and negative lenses, and the like, as shown in fig. 1-1. The AR product is provided with two groups of light paths so that a user can combine a virtual scene with a real scene to achieve the purpose of augmented reality. Wherein, the first group of optical paths (virtual optical paths) is a virtual image with a finite distance formed by a picture displayed by the Display through an optical waveguide and a negative lens, and the virtual image is transmitted to a user, and the virtual image is a virtual scene; the second set of optical paths (real optical paths) is the real world object delivered to the user through the Visor, positive lens, optical waveguide (or free-form surface), and negative lens, which is a real scene, as shown in fig. 1-2.
For an ideal AR product, the effective focal lengths of the positive lens and the negative lens are equal in size and opposite in sign, and the positive lens and the negative lens are mutually offset without influencing an optical path, namely, the diopter of the whole product is 0. However, due to the influence of the machining precision and the assembling process of the actual optical element, the AR whole machine inevitably has a certain diopter, and if the absolute value of the diopter is too large, the user cannot normally observe the real world target object. It is therefore important to measure the diopter of the AR positive electrode.
Currently, the diopter measurement devices exist in the following categories: one is a computer lensometer in the medical field, such as NIDEK LP LM-1800PD, the equipment has low test precision and does not meet the test requirement of AR products; one type is laboratory equipment for measuring lens EFL with high precision, such as triotics HR, phasics SID4 and the like, the former can not meet the test range of AR products, and the latter is expensive in manufacturing cost, complex in test process, low in efficiency and not suitable for production test.
Therefore, how to provide a method, a device and an apparatus for measuring diopter of an optical module of a head-mounted device, which have low test cost and simple process, becomes a problem to be solved by those skilled in the art.
Disclosure of Invention
The embodiment of the invention aims to provide a diopter measuring method, device and equipment for an optical module of head-mounted equipment, wherein the diopter measuring method, device and equipment are simple and efficient in measuring process and simple in equipment cost in the using process, and can be suitable for production measurement.
In order to solve the above technical problem, an embodiment of the present invention provides a method for measuring a diopter of an optical module of a head-mounted device, which is applied to a diopter measuring device provided with a graphic card module, a collimator, an optical module to be measured, and an image acquisition module along a light transmission direction, and includes:
moving a graphic card in the graphic card module to an initial position in advance, wherein the initial position is obtained in advance;
adjusting the position of the image card module, and acquiring each image card image of the image card through the image acquisition module;
acquiring a picture card position corresponding to a picture card image with the highest definition;
and calculating the diopter of the optical module to be measured based on the initial position, the position of the graphic card and a preset calculation relation.
Optionally, the calculating the diopter of the optical module to be measured based on the initial position, the position of the graphic card and a preset calculation relationship includes:
determining the moving distance of the graphic card based on the initial position and the position of the graphic card;
calculating the diopter of the optical module to be measured based on the moving distance and a preset calculation relation; wherein:
the preset calculation relationship is as follows:
Diopter＝1/F sam ，
F sam showing the effective focal length of the optical module to be tested, F 1 Denotes the front focal length of the collimator, F 1 ' denotes the back focal length of the collimator, L denotes the moving distance of the graphic card, and D denotes the distance of the test bit from the collimator.
Optionally, the initial position is obtained in advance, and includes:
when the optical module to be tested is not placed, the position of the graphic card module is adjusted, and each initial graphic card image of the graphic card is obtained through the image acquisition module;
and taking the image card position corresponding to the initial image card image with the highest definition as the initial position.
Optionally, the graphics card module is arranged on the driving module;
adjusting the position of the graphic card module, including:
and controlling the driving module to drive the graphic card module to move so as to adjust the position of the graphic card module.
Optionally, the obtaining of each image card image of the image card by the image acquisition module includes:
and the driving module drives the graphic card to control the image acquisition module to acquire a graphic card image of the graphic card every time the graphic card moves a preset distance.
Optionally, the obtaining of the card position corresponding to the card image with the highest definition includes:
calculating the definition of each image card;
fitting a fitting curve corresponding to the definition and the position based on the definition and the position corresponding to each image card image;
and determining the position of the graph card corresponding to the graph card image with the highest definition based on the fitting curve.
Optionally, the optical module to be tested is a left eyeglass module or a right eyeglass module of the head-mounted device.
The embodiment of the invention also provides an optical module diopter measuring device of head-mounted equipment, which is applied to diopter measuring equipment provided with a graphic card module, a collimating device, an optical module to be measured and an image acquisition module along the light transmitting direction, and comprises:
the moving module is used for moving the graphic card in the graphic card module to an initial position in advance, and the initial position is obtained in advance;
the control module is used for adjusting the position of the graphic card module and acquiring each graphic card image of the graphic card through the image acquisition module;
the acquisition module is used for acquiring the image card position corresponding to the image card with the highest definition;
and the calculation module is used for calculating the diopter of the optical module to be measured based on the initial position, the image card position and a preset calculation relation.
The embodiment of the present invention further provides an optical module diopter measurement device of a head-mounted device, including: the device comprises a processor, a driving module, a graphic card module, a collimating device, an optical module to be tested and an image acquisition module, wherein the graphic card module is arranged on the driving module;
the processor is used for controlling the driving module to drive the graphic card module to move to an initial position and controlling the driving module to adjust the position of the graphic card module;
the image acquisition module is used for acquiring each image card image of the image card in the moving process of the image card module;
and the processor is used for acquiring the image card position corresponding to the image card with the highest definition based on each image card image, and calculating the diopter of the optical module to be measured based on the initial position, the image card position and a preset calculation relation.
Optionally, the driving module is a driving module.
The diopter measuring method for the optical module of the head-mounted equipment, provided by the embodiment of the invention, is applied to diopter measuring equipment provided with a graphic card module, a collimating device, an optical module to be measured and an image acquisition module along the light transmitting direction, and comprises the following steps: moving a graphic card in a graphic card module to an initial position in advance, wherein the initial position is obtained in advance; adjusting the position of the image card module, and acquiring each image card image of the image card through the image acquisition module; acquiring a picture card position corresponding to a picture card image with the highest definition; and calculating the diopter of the optical module to be measured based on the initial position, the position of the graphic card and a preset calculation relation.
It can be seen that, in the embodiment of the present invention, the image card in the image card module is moved to the initial position in advance, so that light passes through the image card, the collimating device and the optical module to be measured in the transmission process to reach the image acquisition module, the position of the image card module is adjusted until the image card with the highest definition is obtained, the position of the image card corresponding to the image card with the highest definition is determined, and the diopter of the optical module to be measured can be calculated according to the initial position, the position of the image card corresponding to the image card with the highest definition and the preset calculation relation.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flowchart of a method for measuring diopter of an optical module of a head-mounted device according to an embodiment of the present invention;
figure 2 is a schematic structural diagram of a diopter measurement device provided by the embodiment of the present invention;
fig. 3 is a schematic structural diagram of an optical module to be tested according to an embodiment of the present invention before being placed;
fig. 4 is a schematic structural diagram of an optical module to be tested after being placed thereon according to an embodiment of the present invention;
FIG. 5 is a diagram of a graphics card according to an embodiment of the present invention;
FIG. 6 is a diagram of a graphics card image according to an embodiment of the present invention;
FIG. 7 is a graph of image sharpness versus location of a graphics card according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an optical module diopter measurement apparatus of a head-mounted device according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an optical module diopter measurement device of a head-mounted device according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method, a device and equipment for measuring diopter of an optical module of head-mounted equipment, wherein the measuring process is simple and efficient in use, the equipment cost is simple, and the method, the device and the equipment can be suitable for production measurement.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a method for measuring a diopter of an optical module of a head-mounted device according to an embodiment of the present invention. The measuring method is applied to diopter measuring equipment provided with a graphic card module, a collimating device, an optical module to be measured and an image acquisition module along the light transmitting direction, and comprises the following steps:
s110: moving a graphic card in a graphic card module to an initial position in advance, wherein the initial position is obtained in advance;
it should be noted that the method in the embodiment of the present invention is applied to the diopter measurement device shown in fig. 2, where the diagram card module includes a light source and a diagram card, where the light source is used to light the diagram card after being turned on, and the relative position of the light source and the diagram card is fixed, the light source is placed at one side of the diagram card, and a collimator, a base of a product to be measured, and an image acquisition module are sequentially placed along a light path of another time of the diagram card, where the collimator is used to convert received light into parallel light to be emitted, and in practical application, the image acquisition module may be a camera, and the collimator may be a collimator lens.
Specifically, the initial position of the image card can be predetermined in practical application, the image card image acquired by the image acquisition module is clearest at the initial position, when diopter measurement is carried out on the optical module to be measured, the image card in the image card module can be moved to the predetermined initial position, and the position of the image card module can be moved by controlling the movable module.
S120: adjusting the position of the image card module, and acquiring each image card image of the image card through the image acquisition module;
it should be noted that, in practical application, a base of the product to be tested may be provided for fixing the optical module to be tested, so as to ensure the position consistency of each optical module to be tested. Specifically, after the graphic card is moved to the initial position, the optical module to be detected can be placed on the base of the product to be detected, so that light reaches the image acquisition module through the graphic card, the collimator and the optical module to be detected in the transmission process, then the position of the graphic card module is continuously adjusted, and the image of the graphic card is continuously acquired through the image acquisition module.
S130: acquiring a picture card position corresponding to a picture card image with the highest definition;
specifically, the graph card image with the highest definition is determined by analyzing each graph card image, and the graph card position corresponding to the graph card image with the highest cleaning degree is obtained.
S140: and calculating the diopter of the optical module to be measured based on the initial position, the position of the graphic card and a preset calculation relation.
In practical application, a preset calculation relationship of calculating diopter can be determined in advance, and then after an initial position and a picture card position corresponding to a picture card image with the highest definition are obtained, the diopter of the optical module to be measured can be calculated through the initial position, the picture card position and the preset calculation relationship, wherein the optical module to be measured can be a left glasses module or a right glasses module of a head-mounted device (AR device).
Further, above-mentioned based on initial position, picture card position and preset calculation relation, calculate the diopter of optical module that awaits measuring, include:
determining the moving distance of the graphic card based on the initial position and the position of the graphic card;
calculating the diopter of the optical module to be measured based on the moving distance and a preset calculation relation; wherein:
the preset calculation relationship is as follows:
Diopter＝1/F sam ，
F sam representing the effective focal length, F, of the optical module under test 1 Denotes the front focal length of the collimator, F 1 ' denotes the back focal length of the collimator, L denotes the moving distance of the graphic card, and D denotes the distance of the test bit from the collimator.
It should be noted that, in practical applications, the preset calculation relationship may be determined empirically, as shown in fig. 3, for example, the focal length of the observation camera is F 1 The image card is placed at the focus of the collimating device, the backlight light source is placed behind the image card, the emergent light beam is parallel light, an observation camera behind the collimating device needs to be focused to a wireless far distance to capture the image of the image card, the observation camera is fixed, and then the product to be detected is placed on a base of the product to be detected behind the collimating device (as shown in fig. 4), wherein the distance between the collimating device and the base of the product to be detected is D, the position of the image card is adjusted until the observation camera captures the image of the image card with the highest definition again, and then the image can be obtained by a Gaussian formula:
Diopter＝1/F sam wherein, in the process,
then, in the actual measurement process, the moving distance of the image card from the initial position to the image card position corresponding to the image card with the highest definition can be calculated according to the initial position of the image card and the image card position corresponding to the image card with the highest definition, and then the diopter of the optical module to be measured can be calculated based on the moving distance and the preset relationship, wherein F in the preset relationship 1 、F 1 ', L and D can be measured in advance.
Further, the initial position is obtained in advance, and specifically may include:
when the optical module to be detected is not placed, the position of the graphic card module is adjusted, and each initial graphic card image of the graphic card is obtained through the image acquisition module;
and taking the image card position corresponding to the initial image card image with the highest definition as the initial position.
It can be understood that, in practical applications, in the embodiment of the present invention, at an initial stage of measurement, a light source (specifically, a planar light source) in the image card module may be turned on, when the optical module to be measured is not placed on the base of the product to be measured, the position of the image card module is adjusted, an image acquisition module (for example, an observation camera) continuously acquires an initial image of the image card, determines an initial image of the image card with the highest definition, and then takes a position corresponding to the initial image of the image card with the highest definition as an initial position and records the initial position, and accordingly, positions of the collimating device, the base of the product to be measured, and the camera should be recorded. After the initial position is determined, when a product to be measured is measured subsequently, the collimating device, the base of the product to be measured and the camera are all arranged at corresponding positions, then the image card is moved to the initial position, and the subsequent diopter measurement is carried out. Certainly, in practical application, can all carry out initial position's acquirement through above-mentioned mode when carrying out diopter measurement to every product that awaits measuring to after determining initial position, measuring the product that awaits measuring based on this initial position again, this product that awaits measuring can specifically measure the diopter of the left eye mirror module and the right glasses module of the head equipment that awaits measuring for the head equipment that awaits measuring.
Furthermore, the graphic card module can be arranged on the driving module;
then, the process of adjusting the position of the graphics card module may specifically include:
the control driving module drives the graphic card module to move so as to adjust the position of the graphic card module.
It should be noted that, in practical application, the card module can be moved by the driving module, that is, the card module can be disposed on the driving module, and then the driving module is controlled to drive the card module to move, so as to adjust the position of the card module. Wherein, the drive module can be the electric jar in practical application.
Further, the above-mentioned process of obtaining each image card image of the image card through the image acquisition module may include:
the driving module drives the graphic card to move for a preset distance every time, and the image acquisition module is controlled to acquire a graphic card image of one graphic card.
It should be noted that the driving module is controlled to move, and each time the driving module moves a preset distance, the image acquisition module is controlled to acquire a card image of one card, so that a plurality of card images are acquired, and each card image corresponds to one card position.
Further, the process of obtaining the card position corresponding to the card image with the highest definition may specifically include:
calculating the definition of each image card;
fitting a fitting curve corresponding to the definition and the position based on the definition and the position corresponding to each image card image;
and determining the position of the graphic card corresponding to the graphic card image with the highest definition based on the fitted curve.
It should be noted that, in the embodiment of the present invention, each image of the image card is analyzed according to each image of the image card acquired by the image acquisition module, the definition of each image of the image card is calculated, then each definition and the corresponding position are fitted to obtain a fitting curve, then the position of the image card with the highest definition is determined based on the fitting curve, and the position is used as the final image card position.
The photosensitive module that awaits measuring can be for the left glasses module or the right glasses module of head-mounted apparatus in practical application, uses the glasses module of head-mounted apparatus to exemplify below:
turning on a plane light source, under the condition that a product to be detected is not placed, driving a module to drive a graphic card (as shown in fig. 5) and a light source to synchronously move until an observation camera captures the clearest image formed by the graphic card, as shown in fig. 6, and recording the position of the graphic card as L0;
placing the right glasses module of the product to be tested at the test position (i.e. the product to be tested), driving the graphic card to move by the driving module until the observation camera captures the clearest image of the graphic card again, recording the position of the graphic card as L1 (the initial position), then having LR = L1-L0 (as shown in FIG. 7), and then substituting the LR as L into the preset calculation relationship Diopter =1/F sam Wherein, in the process,
and obtaining the diopter of the right glasses module.
Then the left eyeglass module of the product to be tested is placed at the testing position, the driving module drives the graphic card to move until the observation camera captures the clearest image of the graphic card again, the position of the graphic card is recorded as L2, LL = L2-L0 exists, and then the LL is substituted into a preset calculation relation Diopter =1/F as L sam Wherein, in the step (A),
and obtaining the diopter of the right glasses module.
For example, the front and back focal lengths of the collimator are 500nm, the collimator is 100mm, and the test specification of the tentative Diopter ± 0.125D (where D is Diopter unit), then Diopter is Diopter = 2.5-1.25/(0.8l + 0.5), and the precision of the driving module is 0.01mm, and then the ideal resolution of the Diopter measurement device can reach 0.00012D (Diopter unit).
Table 1 shows diopter test data (3 products (DUT 1, DUT 2, DUT 3), 3 times of repeated picking and placing tests), and thus it can be seen that the diopter test system repeatability can reach 0.01D (diopter unit).
It can be seen that, in the embodiment of the present invention, the image card in the image card module is moved to the initial position in advance, so that light passes through the image card, the collimating device and the optical module to be measured in the transmission process to reach the image acquisition module, the position of the image card module is adjusted until the image card with the highest definition is obtained, the position of the image card corresponding to the image card with the highest definition is determined, and the diopter of the optical module to be measured can be calculated according to the initial position, the position of the image card corresponding to the image card with the highest definition and the preset calculation relation.
Referring to fig. 8, on the basis of the above embodiment, an embodiment of the present invention further provides a diopter measurement apparatus for an optical module of a head-mounted device, which is applied to a diopter measurement device provided with a card module, a collimator, an optical module to be measured, and an image capture module along a light transmission direction, and the diopter measurement apparatus includes:
the moving module 11 is used for moving the graphic card in the graphic card module to an initial position in advance, wherein the initial position is obtained in advance;
the control module 12 is used for adjusting the position of the graphic card module and acquiring each graphic card image of the graphic card through the image acquisition module;
the obtaining module 13 is configured to obtain a card position corresponding to a card image with the highest definition;
and the calculating module 14 is used for calculating the diopter of the optical module to be measured based on the initial position, the position of the graphic card and a preset calculating relationship.
It should be noted that the method for measuring diopter of an optical module of a head-mounted device in the embodiment of the present invention has the same beneficial effects as the apparatus for measuring diopter of an optical module of a head-mounted device in the above embodiment, and for the specific description of the method for measuring diopter of an optical module of a head-mounted device in the embodiment of the present invention, please refer to the above embodiment, and the description of the present invention is omitted here.
On the basis of the above embodiments, the embodiment of the present invention further provides an optical module diopter measurement device of a head-mounted device, as shown in fig. 9. The method comprises the following steps: the device comprises a processor, a driving module, a graphic card module, a collimating device, an optical module to be tested and an image acquisition module, wherein the graphic card module is arranged on the driving module;
the processor is used for controlling the driving module to drive the graphic card module to move to the initial position and controlling the driving module to adjust the position of the graphic card module;
the image acquisition module is used for acquiring each image card image of the image card in the moving process of the image card module;
and the processor is used for acquiring the picture card position corresponding to the picture card image with the highest definition based on each picture card image, and calculating the diopter of the optical module to be measured based on the initial position, the picture card position and the preset calculation relation.
Wherein, in practical application, the drive module can be the movable piece.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It should also be noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the components and steps of the various examples have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a wear optical module diopter measuring method of equipment which characterized in that is applied to the diopter measuring equipment who is equipped with picture card module, collimating device, optical module and image acquisition module to await measuring along the direction of sending of light, includes:
moving a graphic card in the graphic card module to an initial position in advance, wherein the initial position is obtained in advance;
adjusting the position of the image card module, and acquiring each image card image of the image card through the image acquisition module;
acquiring a picture card position corresponding to a picture card image with the highest definition;
and calculating the diopter of the optical module to be measured based on the initial position, the position of the graphic card and a preset calculation relation.
2. The method for measuring diopter of the optical module of the head-mounted device according to claim 1, wherein the calculating the diopter of the optical module to be measured based on the initial position, the position of the graphic card and a preset calculation relationship comprises:
determining the moving distance of the graphic card based on the initial position and the position of the graphic card;
calculating the diopter of the optical module to be measured based on the moving distance and a preset calculation relation; wherein:
the preset calculation relationship is as follows:
Diopter＝1/F sam ，
F sam representing the effective focal length, F, of the optical module under test 1 Denotes the front focal length of the collimator, F 1 ' indicating collimating meansBack focal length, L represents the distance of movement of the card, and D represents the distance of the test bit from the collimator.
3. The method for measuring diopter of optical module of head-mounted device according to claim 1, wherein said initial position is pre-acquired and comprises:
when the optical module to be tested is not placed, the position of the graphic card module is adjusted, and each initial graphic card image of the graphic card is obtained through the image acquisition module;
and taking the image card position corresponding to the initial image card image with the highest definition as the initial position.
4. The method for measuring diopter of the optical module of the head-mounted device according to claim 1, wherein the graphic card module is disposed on the driving module;
the pair of the position adjustment of the graphic card module comprises:
and controlling the driving module to drive the graphic card module to move so as to adjust the position of the graphic card module.
5. The method for measuring diopter of optical module of the head-mounted device according to claim 4, wherein the acquiring, by the image acquisition module, each image card image of the image card comprises:
the driving module drives the graphic card to control the image acquisition module to acquire a graphic card image of the graphic card every time the graphic card moves a preset distance.
6. The method for measuring diopter of the optical module of the head-mounted device according to claim 4, wherein the obtaining of the position of the image card corresponding to the image card with the highest resolution comprises:
calculating the definition of each image of the graphic card;
fitting a fitting curve corresponding to the definition and the position based on the definition and the position corresponding to each image card image;
and determining the position of the graphic card corresponding to the graphic card image with the highest definition based on the fitted curve.
7. The method for measuring the diopter of the optical module of the head-mounted device according to claim 1, wherein the optical module to be measured is a left eyeglass module or a right eyeglass module of the head-mounted device.
8. The utility model provides a wear optical module diopter measuring device of equipment which characterized in that is applied to and is equipped with the diopter measuring equipment of picture card module, collimating device, optical module and image acquisition module that awaits measuring along the direction of sending of light, includes:
the moving module is used for moving the graphic card in the graphic card module to an initial position in advance, and the initial position is obtained in advance;
the control module is used for adjusting the position of the graphic card module and acquiring each graphic card image of the graphic card through the image acquisition module;
the acquisition module is used for acquiring the image card position corresponding to the image card with the highest definition;
and the calculation module is used for calculating the diopter of the optical module to be measured based on the initial position, the image card position and a preset calculation relation.
9. An optical module diopter measuring device of a head-mounted device, characterized by comprising: the device comprises a processor, a driving module, a graphic card module, a collimating device, an optical module to be tested and an image acquisition module, wherein the graphic card module is arranged on the driving module;
the processor is used for controlling the driving module to drive the graphic card module to move to an initial position and controlling the driving module to adjust the position of the graphic card module;
the image acquisition module is used for acquiring each image card image of the image card in the moving process of the image card module;
and the processor is used for acquiring the image card position corresponding to the image card with the highest definition based on each image card image, and calculating the diopter of the optical module to be measured based on the initial position, the image card position and a preset calculation relation.
10. The apparatus of claim 9, wherein the drive module is a movable member.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211026890.4A CN115326365A (en) | 2022-08-25 | 2022-08-25 | Optical module diopter measuring method, device and equipment of head-mounted equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211026890.4A CN115326365A (en) | 2022-08-25 | 2022-08-25 | Optical module diopter measuring method, device and equipment of head-mounted equipment |
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| CN115326365A true CN115326365A (en) | 2022-11-11 |
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| CN202211026890.4A Pending CN115326365A (en) | 2022-08-25 | 2022-08-25 | Optical module diopter measuring method, device and equipment of head-mounted equipment |
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